A multiscale and multiphysics numerical framework for modelling of hygrothermal ageing in laminated composites

Summary In this work, a numerical framework for modelling of hygrothermal ageing in laminated composites is proposed. The model consists of a macroscopic diffusion analysis based on Fick's second law coupled with a multiscale FE2 stress analysis in order to take microscopic degradation mechanis...

Full description

Saved in:
Bibliographic Details
Published in:International journal for numerical methods in engineering 2017-10, Vol.112 (4), p.360-379
Main Authors: Rocha, I. B. C. M., van der Meer, F. P., Nijssen, R. P. L., Sluys, L. J.
Format: Article
Language:English
Subjects:
Aging
composites
Computer simulation
damage
Formulations
Mathematical models
micromechanics
multiscale
Multiscale analysis
Stress analysis
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Summary In this work, a numerical framework for modelling of hygrothermal ageing in laminated composites is proposed. The model consists of a macroscopic diffusion analysis based on Fick's second law coupled with a multiscale FE2 stress analysis in order to take microscopic degradation mechanisms into account. Macroscopic material points are modelled with a representative volume element with random fibre distribution. The resin is modelled as elasto‐plastic with damage, and cohesive elements are included at the fibre/matrix interfaces. The model formulations and the calibration of the epoxy model using experimental results are presented in detail. A study into the representative volume element size is conducted, and the framework is demonstrated by simulating the ageing process of a unidirectional specimen immersed in water. The influence of transient swelling stresses on microscopic failure is investigated, and failure envelopes of dry and saturated micromodels are compared. Copyright © 2017 John Wiley & Sons, Ltd.
ISSN:0029-5981
1097-0207
DOI:10.1002/nme.5542